Process of and apparatus for coating paper and other fabrics



(No Model.)

B. G. SPARKS. PROCESS OF AND APPARATUS FOR COATING PAPER ANDOTHER'FABRI'GS. No. 343,345. Patented June 8. 1886.

ATTORNEYS.

UNTTED STATES PATENT Orrrcn.

EDYVARD G. SPARKS, OF BROOKLYN, NEIV YORK.

PROCESS OF AND APPARATUS FOR COATING PAPER AND OTHER FABRICS.

SPECIFICATION forming part of Letters Patent No. 343,345, dated June 8,1886.

Application filed February 12, 1886. Serial No. 191,776. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD G. SPARKS, of Brooklyn, in the county ofKings and State of New York, have invented a new and Improved Process ofand Apparatus for Coati n gPaper and other Fabrics, of which thefollowing is a specification, reference being had to the annexeddrawing, forming a part thereof, which is a vertical transverse sect-ionof the apparatus employed in applying the wax or paraffine to the paper.

My invention relates to a new method of and apparatus for coating paperand other fabrics with waX, paraftine, or other coating material, whichconsists in drawing the web of paper or other fabric to be treatedthrough a bath of melted wax, paraffine, or other coating materialcontained in a tank, the tank having an adjustable slit in the sidethereof, the paper web passing through the slit, and carrying with itthe required amount of paraffine or war: through the slit of the tank,as hereinafter more fully described.

In carrying out my invention, I provide a tank, A, of sufficient widthto permit of passing the paper web through it, and where the coatingmaterial requires heat I arrange steam-pipes 13 near the bottom of thetank for maintaining the contents of the tank in a heated or meltedcondition. Bars 0, secured to opposite sides of the tank A, aresupported upon pivots a, which permit of tilting the tank, to retain theliquid material therein, when it is desired to introduce a new web ofpaper oradjust the wax-distributing devices. One side of the tank A isclosed by the bar D, the yielding strip I), secured to the top thereof,the adjustable bar E, and the elastic strip a, secured thereto. In theupper surface of the bar D, and below the yielding strip b, is formed aV-shaped groove, d, which permits of the yielding of the strip 12 atthat ,point. The bar E, formed of wood or other'rigid material, slidesin a guide, G, formed of parallel strips 6, secured transversely in thetank A, the lower V-shaped edge of the bar B being arranged above theV-shaped groove in the bar D. In the groovef ofthe bar E, along itslower edge, is placed the square yielding strip 0, which in the presentcase is held in place by metal strips 0, secured to the angular faces ofthe bar and projecting over the strip. The

strip 0, together with the yielding strip 1), secured to the bar D,forms the mouth or slit of the tank A, through which the paper web F iscarried in the operation of coating it with wax or paraffine. The bar Eis adjustable verticall y by screws 9, swiveled in the top of the bar,and turning in threaded holes along the top of the guide G.

Near the top of the tank'A, at the side opposite the bars D E, issupported a loose guide-roller, H, and the paper to be coated orsaturated is carried from the roll I over the roller H, thence downwardinto the tank A through the coating material contained in the tank,thence outward between the elastic strips 12 cto the roller J, uponwhich the finished paper is received, thepaperbeing drawn through thetank by the rotary motion of the roller J.

The level of the melted wax or paraffine contained by the tank isindicated by the dotted line h, and hshows its level when the tank istilted for the purpose of introducing a new web of paper or adjustingthe bar E. The pressure of the yielding strip 0 upon the paper and ofthe paper upon the strip I is regulated by the screws 9, so that anydesired amount of coating material may be allowed to pass outward withthe paper web as it is carried through the slit between the strips 1) c,and the groove (1 in the bar D permits the strip 1) to yi'eldto theinequalities ofthe paper as it is carried forward.

The bar E, instead of being supported and guided by the slide G, inwhich it is placed, may be supported and guided in any other convenientand efficient way. The relative arrangement of the bars D E may bereversed, and the bar 1) may be placed uppermost and made adjustable,while the bar E is secured in an inverted position to the bottomofthe tank.

Instead of locating the slit in the side of the tank, I may arrange itat the top orbottom, or may form the slit between transverse bars placedat the normal level of the liquid in the tank.

The coated fabric prepared according to my improved method with myimproved apparatus requires no scraping, brushing, or other subsequenttreatment after leaving the slit of the tank A.

I do not limit or confine the application of my invention to anyparticular kind of fabric nor to any special coating for its fabric, nordo I confine myself to any fixed position for the adjustable slit, asthese features may be varied as required.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The method of saturating or coating pa per or other fabric withparafiine, wax, or other coating material, which consists in passing theweb of the fabric into the liquid material, allowing it to becomesaturated or coated with the material, then carrying the web forwardthrough a slit, allowing only the requisite amount of material to adhereto the fabric during its passage from the liquid in the tank,substantially as herein shown and de scribed.

2. Apparatus for coating fabrics, arranged for the immersion of thefabric in liquid coat ing material, and provided with means for allowingonly the requisite amount of coating material to adhere to the fabricduring its emergence from the liquid, substantially as specified.

A tank for applying melted wax, parafi line, or analogous material topaper, )rovided with a slit with yieldingstrips arranged along one orboth sides of the slit for retaining the melted material in the tank andfor allowing only the requisite amount of coating material to adhere tothe opposite surface of the paper during its passage from the liquid inthetank, substantially as herein shown and described.

4. In apparatus for app ying melted Wax, parafiine, or analogousmaterial to paper and other fabrics, a tank provided with an adjust ableslit in one side thereof, and yieldiugstrips arranged along oppositesides of the slit, substa ntiall y as herein shown and described.

5. The combination, with the tilting tank A, of the bar D, provided withthe yielding strip 1), and the adjustable bar E, provided with theyielding strip 0, substantially as here in shown and described.

6. The combination,with the narrow edged bar E, of the bar I), havingthe groove (Z, and the yielding strip Z), secured to the bar D, andarranged to be pushed into the groove d by the edge of the bar E,snl'istantially as described.

7. lhe combination, with the tank A, having an adjustable slit in theside thereof, of means for maintaining the contents of the tank in aheated condition, substantially as herein shown and described.

8. The combination, with the tilting tank A, of the bar I), providedwith the longitudinal groove (1, the yielding strip 1), secured to thebar, the adjustable bar E, having the V- shaped edge, and provided witha yielding strip, 0, the guide G, supporting and guiding the bar E, andthe adjlisting-screws r substantially as herein shown and described.

9. The combination, with the tilting tank A, of the bar 1), providedwith the longitudinal grooved, the yielding strip b, secured to the bar,theadjustable bar E,-having the V- shaped edge, and provided with ayielding strip, c, the guide G, supporting and guiding the bar E, theadjusting-screws g, and steampipes B, for maintaining the contents ofthe tank in a heated condition, substantially as herein shown anddescribed.

10. The combination, with the tilting tank A, of the bar 1), providedwith the longitudinal groove 1], the yielding strip b, secured to thebar, the adjustable bar E, having the V- shaped edge, and provided witha yielding strip, 0, the guide G, supporting and guiding the bar E, theadj nsting screws g, steam-pipes B, for maintaining the contents of thetank in a heated condition, and the roller H, for guiding the web ntothe tank A, substantially as herein specified.

11,. A tank for holding wax or other coating material, having anadjustable aperture, through which the paper is drawn, and whichregulates the escape of such coating material, substantially as hereinshown and described.

12. In an apparatus for preparing wax-paper, the combination, as hereindescribed, of the following instrumentalitiesviz: a shaft for holdingthe webbing of paper to be treated, loose or guide rollers, awax-holding tank having an adj ustablc aperture through which the waxmay flow and the paper is drawn, steampipes or other suitable heatingapparatus, and a reel for drawing and winding up the waxed paper, asherein shown and described.

EDWARD G. SPARKS.

Witnesses:

G150. M. IIOPKINS, O. Snnowiok.

